Balance Sheet Components - Other Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Balance Sheet Components [Abstract]
Payment processor advances	$ 453	$ 363
Prepaid expenses	114	109
Other	442	308
Other current assets	$ 1,009	$ 780

Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Name:	us-gaap_PrepaidExpenseCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant